Stovepipe.



5. T. RIDER.

STGVEPJBE. AHLIGATION FILED Nov. 2?, 19o?,

Patented Feb.16,g1909.

JOHNv T. RIDER, OF OIL Cf'lY, PENNSYLVANIA.

STOVEPIPE.

Specification' of Lettera Latent.

Patented Feb. 16, 1909.

Appiicaaon sied November 27, 1907. seria Nu. 404,1@

lo all whom 'it 'may concern:

Be it known that I. Joins T. iliona, :i citizen of the United States ofAmerica, resid i ing at Oil City, inthe county of' Venuugo and State ofPennsylvania, have invented certain new and useful Improvements in Stoveipes,` of which the following is a speci icatioii, reference being hadtherein to f the accompanying drawing.

vide a pipe having locked edges forming a 5 seam, which will not beaffected when the pipe is cut to produce pieces of variousy length.

A further object of this invention is to i provide sections of storepipe that can be easily Yaiittquickly connected together to iiisurei`iion-lcakiible conduit for smoke.

` The 'invention comprises :i sheet or blank havin its edges bent uponthemselves, and slitte to provide reinforcing lugs, in eombination witha connecting strip engaging the-bent edges of the sheet or blank.

The construction of the improvement will be fully described hereinafterin connection with the accompanying drawin{ {s.y forming a part of thiss eeifeation, and itsy feature?.V of novelty will e set t'orth in theappended claims.

In the drawings: Figure l is a perspective View of the stove pipeembodying my iiiveution, Fig. 2 is an end iiew of a pipe with itsclosure strip removed, F ig. 3 is an elevation of the body portion ofthe pipe, and Fig. 4 is a similar View of the closure strip.

Referring to the drawings, 1 designates a blank sheet of metal whichconstitutes the body portion of the pipo, said blank being oftheproperwidth so that when rolled and manipulated as hereinafter described, apipe section of the proper diameter will be prepared. The longitudinalmar inal edges of the blank are bent outwardly om the. plane of theblank and then buekufardly to form flanges 2,- said flanges extendingthroughout the entire length of the body portion. the bending of theblank to form the flanges providing longitudinally extending recessesbetween the plane of the`blank and the backmetal, bent and provided withintei'- i l wardly extending portions of the flanges. Une of the flanges2 is slitted in a direction at right angles lo the. axis of the blank,the slits being located at various points in the length of the flange,said slits extendin the blank, thereby providing a pluralityr of lugswhich entend in the plane ot und form u continuation of the blank andwhich protect the llanged edge thereof, said lugs being adapted to passbeneath the opposing edge ot the blank when the blank is forme into thepipe.

The complete rum of the pipe section is loi-med by the use. of a closurestrip 4, which, liktI the body-portion has its longitudinallyl,xtev'nding portions bent bat'kwardly to form llaiiges and thelongitudbadly-extending rel vessels. the. flanges of one nien'iherextending L into the recesses ol' the other member. The iu'o members(the body-portion and the Clol l l .sm-e strip) are of equal length` andwhen assembled here their ends coincident. thereby p providing upipe-section roniplete iii itself, land having' its` seam of similarcross-sec ltiolinl configiiration throughout its length. The two membersof each section are onlyr assembled when ready to be used, the prior lnou-usseinhling ot' the members permitting ol a .nesting ol a` numberot' different bodyA portions to economize spare in shipments. thecoinpleinental seam portions of the niemliers, however, being of'predetermined form or shape to permit ol' u ready assembling of themembers when the pipe-section is to be completed. lt is lo he noted thatthe flanges vin shipping position extend in directions angular withrespect to the plane of the members, the longitudinally-oxtendiiig recesses being enlarged on the plane of the free edge oic the flanges, topermit the menibers to be readily assembled.

The members may be assembled either by slipping the closure striplongitudinally of the body portion, the flanges 5 extending within therecesses formed between the flanges Z and the body-portion. muil theends of the two members are. coincident, oi' the unslitted flanged edgeof the body-poi'- tioii may be passed into the complementa] recess ofthe closure .strip while the two members have their ends. coincident,and while in this position, the aiplieation of ressure on the, slittedflan ed edge of the body-portion causes said flanged edge to pass withinthe normal cylindrical plane of from the odge of the flange to the planeo the .section to a point Where the free edge of the closure stripflange will clear the free edge of the slitted flange of thebodyportion, whereupon a release of the pressure permits the members toproperly engage, the provision of' the lugs on but one edge of thebody-portion permitting this yielding movement while the other edge isin engagement with the complemental portion of' the closure strip. Thelatter manner of assenr bling` is preferred owing to the rapidity ofoperation, no essential care being required to haw` the flanges of thebody-portion in substantial alinemenl and the lugs in proper position isnecessary Where the lonatudinal movement of the closure-strip is iad;furthermore, the liability of a binding of the parts when the closurestrip is being passed over the bead andcrimped end portion of the bodyis prevented. While the members at this time are assembled, thepipesection is not complete, as the engagement of the flanges may bebroken by simply applying pressure on the slitted edge of'thebodyportion. The pipe-section is completed by flattening theseam-forming portions in any suitable manner, as by placmg the assembledsection on an anvil and hammering on the outer face of the closure stripthroughout its length. This latter operation changes the shape of theseam in cross-section, the flanges being carried to positions where theyextend in substantial alinement with the members and forming a seam offour thicknesses of the metal in close conta with eachother, this beingincreased to thicknesses only at the points where the "lug: are located.rIhis flattening of the scam brings the opposing edges of the bodyportion into close proximity, the Width of the closure strip flangesbeing such that the flattening causes the free edges of the closurestrip flanges toydraw the edges of the bodyportion together. When thuscompleted, the seam of the pipe-section is of substantially-similarcross-sectional configuration throughout the lenvth of the section andis of a form to prevent breaking of the seam, bending of the pipe alongthe seam line, as Well as preventing leakage. And inasmuch as the seeinhas the same configuration throughout, the section may be cut at anyportion throughout its length to produce a section of less lengthWithout affecting the seam connection in an manner.

As pointed out, the ody and closure strip have their ends coincidentwith each other. As the thickness of the seam is limited, the crimpedend of the section, with the closure strip in position, may be insertedWithin. the adjacentV ipe section when two sections are assembled? 1nthe same manner as the Well known riveted or soldered seam pipe sectionsare connected, with the advantage, however, of having within thetelescoped end of the adjacent section, a seam which is of exceedingstrength against a bending of the pipe by the presence of thelongitudinally-extending flanges and closure strip, these parts foming areinforce within the telescoped en My improved construction provides astove pipe having a continuous reinforced seam or joint, overlappinglugs Within the pipe serving to brace the same transversely, andcooperating with the'longitudinal clo sure strip to impart rigidity andstrength to the pipe.

It is evident that a pipe retains its shape irrespective of where thesame is severed.

Having now described my invention what l claim new, is

1. A stove-pipe section comprising a sheetmetal blank and a closurestrip, said blank and strip being of equal length and each having itslongitudinal marginal portions bent backwardly to form flanges extendingthroughout its length, said flanges providing longitudinally -extendingrecesses between the flanges and the mam portions on the same face ofthe main ortions, the recesses of one part freely receiving the flangesof the other part throughout the len th of the parts, said flanges beinof a wi th to force the opposed ed es o the blank into close proximityby a attening of the strip and the several flanges, the parts inflattened portion forming a seam of substantially similar crosssectional configuration throughout the length of the pipe-section.

2. A stove-pipe section comprisingasheetmetal blank and a closure stripsaid blank and strip being of equal lengthand each having itslongitudinal marginal portions bent backwardly to form' flanges extendinthroughout its length, said flanges provi ing longitudinally-extendingrecesses between the flanges and the mam portions on into closeproximity by. a. flattening of the strip and the several flanges, theparts4 in flat-A t 1ned position forming a seam of substan-`tially-similar cross-sectional configuration throughout the length ofthe pipe-section, the blank having integral lugs projecting from one ofits longit'u inal ed es, said lugs,

` when the 'section is completed, eing located on the inner side of theopposing edgeof the body-portion.

In testnnony whereof I afx my signature .in the presence of twoWitnesses.

JOHN T. RIDER.

Witnesses:

1C. KAHLE, EDWD. S. MoAmJ'vY.

